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<p>Field-level theming determines how the values of a given field are
displayed. The resulting output ends up in the <span class="code>$content</span>
and <span class="code>$&lt;FIELD_NAME&gt;_rendered</span> variables in the node
templates.</p>

<h3>Template files</h3>

<p>In order to customize field themeing:</p>

<ul>
  <li>
    Copy the <span class="code">content-field.tpl.php</span> template file into
    your theme's root folder (please keep the contents of the
    <span class="code">cck/theme</span> folder untouched. For the same reason,
     need to copy the file instead of just moving it).
  </li>
  <li>
    Edit that copy to your liking. See the comments in
    <span class="code">cck/theme/content/content-field.tpl.php</span> for a list
    of all variables available in this template.
  </li>
</ul>

<h3>Template suggestions</h3>

<p>In addition, the theme layer will also look for field-specific variants
(suggestions), in the following order of precedence:</p>

<dl>
  <dt>content-field-&lt;FIELD_NAME&gt;-&lt;CONTENT_TYPE_NAME&gt;.tpl.php</dt>
  <dd>
    ex: <span class="code">content-field-field_myfield-story.tpl.php</span> -
    If present, will be used to theme the 'field_myfield' field when displaying
    a 'story' node.
  </dd>

  <dt>content-field-&lt;CONTENT_TYPE_NAME&gt;.tpl.php</dt>
  <dd>
    ex: <span class="code">content-field-story.tpl.php</span> - If present,
    will be used to theme all fields of 'story' nodes.
  </dd>

  <dt>content-field-&lt;FIELD_NAME&gt;.tpl.php</dt>
  <dd>
    ex: <span class="code">content-field-field_myfield.tpl.php</span> -
    If present, will be used to theme all 'field_myfield' field in all the
    content types it appears in.
  </dd>

  <dt>content-field.tpl.php</dt>
  <dd>
    If none of the above is present, the base template will be used.
  </dd>
</dl>

<strong>Important:</strong>
<ul>
  <li>
    Suggestions work only if the theme also has the base template file.
    If your theme has <span class="code">content-field-*.tpl.php</span> files,
    it must also have a <span class="code">content-field.tpl.php</span> file.
  </li>
  <li>
    Whenever you add new template files in your theme, you need to
    rebuild the theme registry, or the theme engine won't see them.<br/>
    You can do that by :<br/>
    - visiting the <a href="&base_url&admin/build/modules">Administer modules</a> page<br/>
    - or using <a href="http://www.drupal.org/project/devel">Devel module</a>'s
    'clear cache' link.
  </li>
</ul>

<p>See the <a href="http://drupal.org/node/223440">Working with template suggestions</a>
section of the <a href="http://drupal.org/theme-guide">Theme guide for Drupal 6</a>
for more informations about templates and template suggestions.</p>